【摘要】 采用野外定点调查和松木解剖的方式,调查枯死松树伐桩中松材线虫和钻蛀性昆虫的分布和数量,为松材线虫病科学防控提供参考。结果表明:200个伐桩中调查到松墨天牛、松瘤象、马尾松角胫象、暗色松吉丁虫和白蚁等5种钻蛀性昆虫,分布率为31.00%,其中松墨天牛的分布率为7%;伐桩中松材线虫的检出率为10.00%（6月）和5.50%（8月）,6月份含量为1.95条·g^-1,8月份为1.09条·g^-1,明显低于当年染病枯死松树树干（3～4 m处）中的含量3.96条·g^-1和11.65条·g^-1;同时有松材线虫和松墨天牛存在的伐桩极少,仅占伐桩总数的1.00%,且松墨天牛成虫未携带松材线虫,不能发挥疫情传播媒介的作用。综上所述,枯死松树伐桩在松材线虫病流行中的作用极小,因此伐桩处理程序可以简化。更多还原

【Abstract】 The methods of fixed-point field investigation and pine wood dissection were utilized to investigate the distribution and quantity of Bursaphelenchus xylophilus and boring insects in dead pine stumps, so as to provide basis for scientific prevention and control of B.xylophilus. The results showed that five species of boring insects were found in 200 stumps, including Monochamus alternatus, Sipalus gigas, Shirahoshizo patruelis, Ancylocheira haemorroidalis Hbst and termite. The distribution rate of five species of boring insects was 31.00%. The distribution rate of M.alternatus was 7.00%. The detection rates of B.xylophilus in stumps were 10.00%(June) and 5.50%(August).The average content of B.xylophilus was 1.95 pieces per g in June and 1.09 pieces per g in August, which was significantly lower than that of 3.96 pieces per g and 11.65 pieces per g in newly infected dead pine trunks(at 3-4 meters).Meanwhile, the stumps with B.xylophilus and M. alternatus were rare, accounting for 1.00% of the total number of stumps. Moreover, the adults of M. alternatus did not carry B.xylophilus so it cannot play the role of spreading the epidemic. In conclusion, the dead pine stump has little effect on the epidemic of B.xylophilus, and thus the procedure of stump treatment would be simplified.更多还原